Apparatus for operating window frames or sashes



H. COLOMBEL LE. APPARATUS FOR OPERATING wmnow FRAMES on SA SHES.

2 SHEETS-SHEET Fi z.

H. COLOMBELLE. APPARATUS FOR OPERATING wmoow FRAMES 0R SASHES.

APPLICATION FILED JULY 2.1920. 1,406,154 Patented Feb. 7, 1922.

2 SHEETSSHEET 2- UNITED STATES "PATENT orrlcs.

HENRI coLoMBELLn, or LE RAINCY, FRANCE.

APIARATUS FOR ornne'rme wmnow FRAMES on sAsnns.

Specification of Letters Patent.

Patented Feed, 1922.

A pucauon filed July 2, 1920; Serial No. 393,762.

T 0 all whom it may concern:

Be it known that I, HnNRrCoIoMBnmn,

a citizen of France, residing at Le'Raincy,

Seine-et-Oise, France, have invented certain new and useful Improvementsin Apparatus for Operating Window Frames or Sashes, (for which I havefiled applications for patentsin France October 16, 1918,; and

April17, 1919-; in'England DecemberQQ,

1919; in Italy November 10, 1919; in Switzerland Nov. 10, 1919,; inGermany November 17, 1919; in Canada December 22, 1919, and in BelgiumMay 12', 1919,) of which the following is a specification. v

The presentv invention has forits object a device foropening and closingof window 7 frames or sashes withthe greatest ease, and

maintaining them in position in an'fabsolutely certain manner.

This; apparatus is constituted broadly an extending mechanism havingseveral successive jointed parallelograms, constructed in such-a1way-that the front sides of one.

,This lever hasv also arc-shaped rack held normally 1n engagement with afixed catchby a. flat spring to hold the window frame in the desiredposition'and this rack is automatically released when a pull is exerted.

upon more, by whichthefoperation of the window frame from a distance iseffected.

In a modification of the operating system, the. spring is replaced by aspringhaving two long arms which, are generally conn'ected by a loop,the two arms'a-reof' equal length doing away with a return pulley, and

frame.

the course of the'cableissimplified; greater security of locking is thusobtained and a greater smoothness of working.

The following description given by way" of example with reference tothe. accompanying drawings relates-to a practical con-- structional formof the invention; and will enable the peculiarities and usesthereof tobe readily understood. V r V Figure 1 is a frontview of the windowFigure 2 is a section thereof on the line X-X (Figure 1) in the closedposition. 7

Figure 3 is a similar section, the window frame being open.

Figure 4 is a detail view showing the bolt of the rack on alarger scale.

Figure 5 is a modification of the operating system of the window frame.

The window frame is shown at a. It is pivoted along its upper side andis composed of'a rectangular frame with a division bar 6 which carries alug c of the extending system. 7 I w This systeniis constitutedby arms(1 pivoted at each of their-ends and at their centres to other armsie,so as to form the set of jointed parallelograms or lazy-tongs shown inFigure 2.

'The l'astof the arms d is prolonged at 9 beyond its pivot f, and actsas an operating leven, With regard to the pivot f corn- .75 mon to thislever and tothe adjacent half.

arm e, it is supported by a fixed pivot which is carried inthe examplerepresented by a double, supporting bar it placed behind the windowframe and fixed sash i. 0

On the other han'd the: end. of the last of the arms eserves fordirectattachment to the prolongation. g to which is pivoted ato arack-k whichis arranged concentrically with the pivot of. 'This rack passes betweentwo cheeks 1 between which is fixed a block forming a catch m (seeFigure 4) with which the rack normally'engages and with which atitsextremity partis connected a cord g which'passes over two return pulleysp on the lever g, Thiscord' descends and hangs T below the window frame,audits upper return length g isconnected to the end of the said leverFinally a flat spring r is arranged above the catch m and bears on therear of the rack 70 to hold same normally in engagement with the catchm.

The working of this lapparatusis as follows Starting from the closedposition shown in Figure 2 length (1" of the cord is pulledin order to'r aise the rackwhichby the arrangement of recess sf ensures the lockingof the window frame ordinarily. The rack rises and without releasing thelength gof thecord. and by pulling on the length g -theopening" of thewindow frame to the desired degree is effected. I I

The arm 9 being drawn down by the length .9 Ofthe cord oscillates aboutits centre and thrusts the first'arm e which itself exerts its reactionon the arm at, so

, others follow also, as their sides must always remain parallel in eachset.

lVhen the extension of the system effects suflicient opening, the lengthof the cord is no longer pulled and the length 9 is released thuscausing the rack to drop back by its own weight or under the action ofthe spring 7", and engage by one of its teeth with the catch m. Thewindow frame thus remains open in the desired position, and in order toclose it, it is sufficient to perform the reverse operation by liftingthe rack and allowing the window frame to drop back quietly.

However, the action of the spring will not be very strong by reason ofthe small thickness given tothe spring, and should it be desired toemploy a spring which is thick,

and consequently less flexible, the actionbecomes irregular anddiminishes in accordance with the degree of opening of the window frame,and is least when the frame is hearing with its greatest weight upon therack, for at this moment the spring will bear upon the straight portionk instead of on the concave portion 70 and however this spring may beconstituted, it will soon become fatigued and will operate in adefective manner.

The arrangement shown in Fig. 5 will entirely overcome these drawbacks.In this figure, similar parts are indicated by the same letters, but thespring is now composed of a steel wire having two arms of considerablelength 1' and 1*, connected by a loop 8.

This arrangement affords a great flexibility, whereby a spring of mediumforce can be used to produce at all times a sufiicient pressure toprevent the disengagement of the rack from the stop in all positions ofthe frame, whatever may be the weight of this frame. In order tofacilitate the mounting,

the spring is caused to bear'simply upon the operating lever by means ofa small slide 0, and in this manner the rack together with its springcan be-readily removed, all that is required being to take apart thearticulation 0.

As concerns the length covered by the cable, it will be clearly observedthat it has a reduced length in Fig. 5, this being obtained by givingthe same length to thetwo arms hand g, whereby one of the pulleys p canbe omitted, and in this latter case the operation is easier to perform.7

However, a slight deflection has been given at the point an to the bar hsupporting the operatingdevice, this deflection permits of reduction inspace occupied at'top and bottom, by bringing the upright near to theplane of the fixed sash, and it permlts also of use being made thereofdirectly to fix V the top on of the rack. 7

It will be seen that this system is smooth and easy in working and theheaviest window frame may be operated with little effort (by giving thearm suitable proportions) and with the maximum of safety. from adistance. By means of the rack system, should the cord be allowed toescape, or if it shouldhappen to break, the window frame a pivotedextensorfor the lazy-tongs, one

of it'ssides prolonged to form an operating lever, a fixed catch, a rackplvoted at the end of said extensor held normallym engagement with saidcatch, a spring acting on said rack, and a cord one end of which isconnected to the lever controlling the movements of the lazy tongs forcausing'the window frame to open, while the other end is connected tothe free end of the rack, for disengaging said rack from said catch topermit actuation of the lazy tongs, said spring causing automaticengagement of the rack with the catch when the cord is released. l

2. A window operating device, comprising a supporting bar, a leverpivoted thereto, a

lazy-tongs connected to said lever and the window to be operated, a rackpivoted to said lever, a lug on said bar for engaging the rack, a springbetween said rack and said lever, said spring having its ends straightand extended, one of said ends fas tened agalnst movement and the otherslidable, a pulley on said lever, and an operating cord passing oversaid pulley and connected to the end of said rack and a cord connectedto the end of said lever, r

In witness whereof, I have hereunto signe my name in the witness.

'HENRI' GOLOMBELLE. 1

Witness:

CLEMENT S. EnwARDs.

presence of a subscribing

